Allen Institute for Artificial Intelligence
Microsoft co-founder Paul Allen pledged an additional $125 million over three years to the research center he founded in 2014 to expand the capabilities of artificial intelligence. The new gift will fund research aimed at instilling common sense in AI programs, enabling them to better solve problems and manage unforeseen situations without human input.
United World College
Investor Shelby Davis has promised $100 million to endow scholarships for international students at any of the college system's 17 affiliated two-year institutions worldwide. The pledge, which will be paid out over 20 years, will fund 100 scholarships per year.
Davis is the founder and retired chief executive officer of Davis Selected Advisers, an investment firm in Tucson, Ariz.
Bryn Mawr College
The women's college received $25 million from an anonymous donor. The gift to Bryn Mawr's $250 million capital campaign will be used for international programs and to renovate the campus's Park Science Center.
Carnegie Mellon University
Silicon Valley executive Keith Block and his wife, Suzanne Kelley, have made the lead $15 million gift to establish the Block Center for Technology and Society, which the university says will explore "the intersection of technology and humanity."
Block is the vice chairman, president, and chief operating officer of the software company Salesforce. He earned bachelor's and master's degrees at Carnegie Mellon and serves on the university's Board of Trustees.
Basketball superstar Kevin Durant has pledged $10 million over 10 years through his foundation to expand the nonprofit college-completion program to Prince George's County, Md., where he grew up. The charity will use the gift to establish the Durant Center for its educational and leadership programs.
Durant plays for the National Basketball Association champion Golden State Warriors and was named the most valuable player of last year's NBA finals. He won the league's overall MVP Award for the 2013-14 season as a member of the Oklahoma City Thunder.
Community Medical Centers
Robert Smittcamp and his family are giving $10 million for the central California hospital system's neuroscience programs and services.
Smittcamp is the CEO of Lyons Magnus and a co-owner of the Wawona Packing Company, food-service companies based in Fresno and Cutler, Calif., respectively.
Former finance executive Pamela Zilly donated $7 million to renovate the campus's College Center at Crozier-Williams and create a new endowment for the college's operations and highest priorities.
Zilly retired in 2009 as a senior managing director in the restructuring and reorganization advisory group at private-equity firm the Blackstone Group. She is a 1975 graduate of Connecticut College and chairs its Board of Trustees.
Le Bonheur Children's Hospital
Carl and Trish Ring have given $2 million to establish the Trish Ring Endowment for Child Health and Well-Being at the Memphis hospital.
The couple co-own the Blue Star Ranch, a luxury resort in North Carolina. Ms. Ring is also a psychotherapist in Highlands, N.C., and a former professor of psychology at Rhodes College in Memphis.
St. Simons Land Trust
Billionaire sports and entertainment mogul Philip Anschutz has given $2 million through his family foundation for land preservation on St. Simons Island in Georgia, with a challenge pledge of an additional $2 million if the land trust can raise $4 million separately.
Mr. Anschutz co-owns the National Hockey League's Los Angeles Kings and the NBA's Los Angeles Lakers and owns the Staples Center, where both teams play. Reported to be one of America's top landowners, he and his family bought the Sea Island Company, which operates resorts on the island, in 2015.
To learn about other big donations, see our database of gifts of $1 million or more, which is updated throughout the week.